Condenser for textile fibers



Dec. 16, 1952 E. C(IDTTAM ETAL 2,621,376

CONDENSER FOR TEXTILE FIBERS Filed NOV. 5, 1951 INVENTOR Patented Dec. 16, 1952 OFFICE CONDENSER FOR TEXTILE'FIBERS Eric Cottam and Ronald Berresford Cottam, Worsley, England Application November 5, 1951, Serial No. 254,877 In Great Britain November. 15, 1950 This invention relates to improvements in devices for condensing collections of textile fibres such as slivers or rovings and is particularly applicable for condensing slivers between the drafting rollers of textile spinning, doubling and similar machines. I

The fibre condensing device according to the invention comprises a roller having a bell mouthed groove around its periphery into which groove the fibres enter, the roller being supported on two driven rollers which rotate at the same surface speed and being reciprocated axially so that the groove has a to and frojmovement at right angles to the direction of travel of the fibres.

The invention is illustrated in and will be described with reference to the accompanying drawings, in which Fig. 1 is an end elevation of the condensing device,

Fig. 2 is a transverse section on line 2-2 of v Fig. 4,

Fig. 3 is a plan, and

Fig. 4 is a longitudinal section of the grooved roller.

The condensing device consists of a roller A, preferably of metal or a synthetic resin such as a phenol formaldehyde condensation product having a peripheral groove a of bell, mouthed shape in cross section and two supporting rollers B and B on which the roller Anfests and by which it is rotated through contact Qtherewith. The rollers B and B are drivenes'o that they rotate at the same surface speed and are preferably fluted. ff

The diameters of the three rollers A B and B and the depth of the groove a are so;v proportioned and the axes of the three rollers are so disposed that the sliver or like collection of fibres D will be caused to take an angular path'awhjen passing through the device and will consequently be constrained to move towards the bottom of the groove 11 as shown in Fig. 2 and since the groove is narrowest at its bottom portion the fibres will be condensed or consolidated to an. extent depending on the width of the bottom portion of the groove. 1

So that the width of the groove a in the roller A may be adjustable to suit various sizes of sliver and/or their degree of condensation the roller A is formed in two parts A and A? as shown in Fig. 4. The part A is formed with. a hollow cylindrical portion a which is a sliding fit in a corresponding recess a in the part Afr: A compressing spring F tending to separate the two parts is arranged between the end fthe portion a and the bottom of the recess a and a screw E 2Claims. ((119-157) which engages a screw thread aim the portion a serves to adjust the relative positions ofthe-two parts A and A and consequently the width of the groove ca.

The roller A is given a small longitudinal reciprocating movement parallel to the axes of the rollers B and B by a forked member C which makes contact with each end of the roller and is carried by a reciprocating bar C so that the roove a in the roller will follow thejlateral or transverse movement of the sliver or other collection of fibres.

A textile fibre condensing device according to the invention is particularly applicable for use between the drawing rollers of a drafting head of a spinning. or doubling frame but it is to be understood that its use is not limited to such machines and that it can be employed in. other. machines where condensing or consolidation of a collection of textile'fibres is required.

We claim;

1. A device for condensing collections of textile fibres comprising a roller formed with a peripheral groove of bell mouthed shape in cross section and two driven rollers rotating at the same surface speedwhich support and rotate the grooved roller, the diameters of the three rollers and the depth of the groove in the first roller being so proportioned and the axes of the three rollers being sodisposed that the collection of fibres is caused to take an angular path when in the groove andwill consequently be constrained to move towards the bottom of the latter, the groovedroller being formed in two portions, the relative positions of which can be varied to adjust the width of the groove. l

2. A device for condensing collections of fibres as in claim 1, having means for reciprocating the groovedroller longitudinally relative to thetwo supporting rollers.

1 .ERIC COTTAM.

RONALD BERRESFORD COTTAM.

REFERENCE S CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,252,546 Blake Aug. 12, 1941 v FOREIGN PATENTS Number Country Date 11,118 Great Britain I of 1886 113 307? Great Britain "of 1907 509,493 Great Britain July 10, 1939 

